Human history can be viewed as a slowly dawning awareness that we are members of a… — Carl Sagan

Human history can be viewed as a slowly dawning awareness that we are members of a larger group. Initially our loyalties were to ourselves and our immediate family, next, to bands of wandering hunter-gatherers, then to tribes, small settlements, city-states, nations. We have broadened the circle of those we love... If we are to survive, our loyalties must be broadened further, to include the whole human community, the entire planet Earth.